stem disappearing/linebreak not working

[Charlotte Godley]

Hi there,

Relative newbie to lilypond. Have a problem in that I’m generating some lilypond files from program objects, and for some reason lilypond doesn’t appear to be line breaking a couple of my larger test cases, like this one - http://i57.tinypic.com/x6gab6.png

I’ve tried this example removing the bars before bar 6 and it broke into systems fine, I’ve also tried a few of the hacks and fixes people have put on the internet for forcing lilypond to page break (the objects have awareness of where they should line and page break), but none of them seem to affect bars 6-26.

Additionally, for some reason the stems seem to be disappearing on a few of the notes in the treble clef? Again, this problem went away when I manually removed bars 1-6.

Any suggestion on how to fix this? Compressed lilypond code attached.

Cheers,

Charlotte

lg-131162670.ly.zip
Description: Zip archive